wrote in message
...

A few I can think of offhand:
- Providing altitude verification of your Mode-C readout.
- Providing lateral intentions so they do not have to worry about rouge
VFR targets.
- Providing altitude intentions.

In short by communicating, the pilot is providing the controller peace of
mind that
they are competent and do not present a potential "airspace incursion"
threat by
bumbling into their airspace.


Why would a controller assume you're competent merely by establishing
communications? Establishing communications precludes an airspace
incursion, of course, because establishing communications grants entry. But
establishing communications makes you a participating aircraft that must now
be provided services, including separation from any IFR aircraft he may be
talking to whereas before he just needed to advise that IFR traffic of your
target. In short, calling him will likely only increase his workload. I
don't see how increasing his workload can be considered extending him a
courtesy or providing him peace of mind.